Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. Activate the Rear Sun Shade Switch for at least eight seconds.
3. With the scan tool, read Body Control Module (BCM) DTCs and record on the repair order.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK REAR SUN SHADE MODULE
1. Turn the ignition off.
2. Disconnect the Rear Sun Shade Module harness connector.
3. Turn the ignition on.
4. Activate the Rear Sun Shade Switch for at least eight seconds.
5. With the scan tool, read BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Replace the Rear Sun Shade Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (Q557) REAR SUN SHADE MODULE SIGNAL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the BCM C5/E harness connector.
3. Check for continuity between ground and the (Q557) Rear Sun Shade Module Signal circuit at the Rear Sun Shade Module harness connector.
  Is there continuity between ground and the (Q557) Rear Sun Shade Module Signal circuit?
  
  Yes
  - Repair the short to ground in the (Q557) Rear Sun Shade Module Signal circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL (BCM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .